What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Kenwood TK-88

 Solid State FET FM/AM Automatic Multiplex Stereo Receiver
Model TK-88, offers 90 watts music power FM/AM Multiplex Stereo Receiver, brings you the luxury of full, rich-bodied sound and audio perfection of all solid state stereo with FET front-end, silicon transistor amplifier and other advanced engineering features

Special Features
Tuner Section
FET (Field Effect Transistor) 4 gang Tuning Condenser Front-end provides FM 2mV sensitivity and 66 dB image rejection.
5 IF Stages with 4 Limiters and Wide Band Ratio Detector provide 45 dB alternate channel selectivity and freedom from noise and interference.
Automatic FM Stereo/Mono Mode Silent Switching Circuit with Stereo Light Indicator
Interstation Muting Circuit suppresses inter-station noise
4 diodes Time Division Multiplex Decoder for 38 dB stereo separation.
Illuminated Pinpoint FM Tuning Meter

Amplifier Section
90 watt IHF standard total music power to drive even low efficiency Hi-Fi speakers
All Silicon Transistor Amplifier, provides wide 20 to 50,000 Hz frequency response
High Damping Factor for excellent transient response
Very low Im distortion for exceptional, clear low level to high level listening
Blow-out free exclusive, Automatic Circuit Breaker protects Power Transistor (U.S. pat.)
4-sets of Output Speaker terminals (2 sets of stereo speakers) and Front Panel Speaker Selector Switch (A speakers, B speakers, A+B speakers, headphones)
5-position Program Source Selector permits AM, FM Auto, Phono, Tape HD, Aux
3-position Mode Switch for Stereo, reverse, Mono
Direct Tape Monitor Switch for tape monitoring without changing cable connector.
Illuminated Program Source Indicator

Volume control with Rocker Switch for loudness control
Dual Knobs/Bass and Treble controls may be used to regulate each channel separately or simultananeously
High and Low Filters eliminate turntable noise and scratch noise
6 pairs of Input Terminals for Mag, XTAL, Tape HD, Aux, Tape Rec, Tape Play
Front panel Stereo Phone jack
Center Channel Low level Output for monaural amplifier and speaker
Handsome simulated walnut finish cabinet

Specifications
Tuner Section
FM Usable Sensitivity:  2,0 microvolts (IHF)
AM Usable Sensitivity:  10 microvolts
FM Signal-to-Noise Ratio:  60 dB
FM Selectivity (Alt. channel):  45 dB
FM Harmonic Distortion:  0,6%
FM Image Rejection:  66 dB
FM Cross Modulation Rejection:  80 dB
FM Capture Ratio:  2,5 dB
FM Stereo Separation:  38 dB (at 400 Hz)
FM Interstation Muting:  Yes
FM Stereo/Mono Auto Switching:  Yes
FM IF Stages:  5 stages
Amplifier Section
Total Music Power:  90 watts at 4 Ω
IHF Standard:  80 watts at 8 Ω
RMS Power (1 kHz, 0,8% THD):   32/32 watts (at 8 Ω)
IM Distortion (at -3 dB rated output):  0,3%
Frequency Response:  20 - 50,000 Hz (±2 dB)
Power Bandwidth (0,5% THD, -3 dB):  20 - 30,000 Hz
Signal-to-Noise Ratio: 
Aux :  70 dB
Mag :  60 dB
Damping Factor:  46 at 16 Ω;  23 at 8 Ω
Bass Control (at 50 Hz):  ±10 dB
Treble Control (at 10 kHz):  ±10 dB
Input Sensitivity:
Mag :  2 mV
Aux :  150 mV
Tape HD :  2 mV
Dimensions (W x H x D):  16 ½ " x 5' x 12 ¼"

Weight:  24 lbs

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